I haven't found much solid info on what wad to use with a .58 cal RB in a 20ga. I just ordered a Lee mold to cast up my own.
I'm using Cheddite straight walled hulls (new).
Also, if the RB is in a wad, do I need to be concerned with what kind of lead I use? I have some soft, some WW, and some WW with a bit of lino.
Thanks for any info.